Isidore goldman



l. GOL'DMAN.

ARTIFICIAL TOOTH.

APPLICATION FILED MAR. 25. I919.

1,31 6,787 I Patented Sept. 23, 1919.

fur m1 v'm n l'l wmuuml um. WASHINGTON, m C.

UNITED STATES PATENT UFFIQE,

ISIDORE GOLDMAN, OF LEEDS, ENGLAND, ASSIGNOR TO THE DENTAL MANUFACTURING- COMPANY, LIMITED, OF LONDON, ENGLAND.

ARTIFICIAL TOOTH.

Specification of Letters Patent.

Patented Sept. 23, 1919.

To all whom it may concern:

Be it known that I, Ismoen GoLDMAN, a Russian subject, of 105" North street, Leeds, in the county of York, England, have invented new and useful Improvements in and Relating to Artificial Teeth, of which the following is a specification.

My invention relates to improvements in those artificial teeth in which a pin is mounted centrally in the face of a projection or boss on the rear face of the tooth, this boss servin the purpose of locking the tooth to the vuIcanite plate when the tooth is set in position and preventing relative movement between the plate and the tooth while strengthening that portion of the tooth which isusually the weakest part. In teeth of this form the boss also serves the purpose of transmitting the force of the bite directly from the plate to the tooth andrelieving the biting stress on the pin.

According to the present invention the looss which may be of any desired form is undercut on all sides, and is combined with a single pin mounted in or near the center of the face of the boss.

My invention is illustrated by Way of example in the accompanying drawings, in which Figure 1 shows a side view of a tooth {with a boss of approximately square forma- Fig. 2 shows a plan view of Fig. 1,

Fig. 3 shows a rear face of Fig. l, and

Fig. 4 shows a side View of a tooth fitted with a headed pin.

Referring now to the drawings The tooth 1 is provided with a boss 2 which is undercut at 3 on all sides. A platinum or other suitable pin 6 is mounted in or about the center of the boss 2. If desired, as shown in Fig. 4:, the pin may be provided with a head 7.

What I claim is An artificial tooth comprising a boss on the rear face of the tooth, undercut sides to said boss and a pin mounted in the face of said boss. 4

In testimony whereof I sign my name to this specification.

ISIDORE GOLDMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

